pokemon cards xy TCG: Evolutions Sealed Booster Box : Toys & Games Uncommon Card Type Pokemon Card - XY: Ancient

Most opponents are not gonna risk that kind of blowout a second time, so you end up getting a huge unblockable threat for just one green mana

Thought Erasure is great against Wilderness Reclamation decks (snagging their big payoff or whatever) and great against Esper (take their best card and know exactly what youre up against), but its also one of the best answers in the format to Hydroid Krasis, since making your opponent discard the Krasis stops the card draw ability (while merely countering does not)

They all give you access to more, and hopefully better resources

This is used for spells that specifically need colorless mana, like Kozilek, the Great Distortion